Brake control for front wheels of motor vehicles



Dec,- 11 1923.

- I J. COLLA BRAKE CONTROL FOR FRONT WHEELS 0 Filed se tyll. 1922 F MOTOR VEHICLESv 2 Shams-Sheet 1 Dec. 11, 1923. 1,477,037

J. COLLA BRAKE CONTROL FOR FRONT WHEELS OF MOTOR VEHICIQES Filed Sept. 11. 1922 2 Shets-Sheet, 2

M/I/E/V Torr,

o he tutti err in (A A ice.

Jill'l-SEPH CEBLLA, 63F ISEUIREFRANCE.

. KER/i Application filed September To all whom may concern;

Be it known that ll, JFOSEPH (loom, residlog at lissoire, France, have invented new and useful Improvements in Brake Controls for Front Wheels, of lilo-cor Vehicles, of which the following is a, specification.

My invention relates to o bralre control for front wheels of motor vehicles, said wheels assuming; a variable direction with respect to the axle. its principal advantage consists in the fact that the action of the control on the brakes is independent of the position occupied by the wheel at the time of broking.

According to the invention the brakes on the two front wheels are in iact actuated by 1 o. singlefiexible driving device, for example o. metal cable, mounted upon pulleys which are so disposed that in all positions of the wheel with respect to the axle, the attaching point of the driving device to the brake drumwill remain some distance from tl 'ieouter pulley. The flexible driving device sets upon lever coo zollihg a cum which is disposed between. t: free ends or a pair oi? broke shoes contained in the drum and pivotihg; on a common The cam separates hoes cud presses them against the inner the drum, ti braking the Wheels. e lever Qoiiiifi'blling the said flexible bra-h device oporated iii the direction of the saris of the vehicle, whereby the braking octiou takes place at the some time upon the two wheels;

The following description, together with the accompanying drawings which are given by way of example, sets forth this invoution.

Fir. 1 is on elevationcl View to of the front axle with the mounted upon the wheel.

Fig. 2 is a. plan view of the some portion oi the mile.

Figfll is a. section on the axis X-X of to 1.

ig. 45 shows the brake members conteiued in the drum.

Fig. is a detail view showing the method oi mounting the flexible drive on the lever to determiuing the degree oi separation of said broke members.

In the figures, 1' indicates the front axle of the vehicle, 2 the geometrical pivoting A wl'ioel, 3 the la: cud the brake of a portion brake drum i'o ed. to the journal 5 of the wheel.

sec

WHEELS 0F MQTOR VEHICLES.

ll, 1922. Serial No. 587,515.

The cable 8 constituting the flexible drive of the brake, is disposed upon the pulleys 9 and 10 which are mounted on. a cross-piece 11 secured by bolts 12 to the vehicle springs; Clhe pulley 10 is so disposed that the point A where the cable leaves the pulley is 10-. outed upon the pivoting axis 2 of the wheel. The cable 8 issecui'ed to an eye-bolt 17, Figs; 2, 3 and 5, to which is screwed a wing-nut 19 for regulating the tension of the cable, said eye-bolt engaging an aperture 20 in the arm 21 of a sleeve 23 which is keyed to the} rod 22 controlling the cam 24, Fig. 4. The combination of rod 22 and said sleeve is revoluble in the socket 25 which-is permanently secured to the wall 4 of the drum 4. i

The brake properly so called is formed of two substantially semicircular members 26, Fig. 4, operating upon a common pivot 28. The outer part of said brake members which constitutes the active surface, is situated close to the inner surface of the drum 4. A certain specs is provided between the said brake members wherein is disposed the said cam, which is thus situated between the opposite end. surfaces 26 26 brake members are returned to position after the braking action has taken place by means of-thc twoieoiled springs 30 secured to lugs 31 on said brake members.

The control of the cable is efi c'cted ac cording" to the longitudinal central plane of the vehicle (Fig. 2), by means of the co motion 33 which moves (in the direction of the arrow F) under influence of an oper ting lever; not shown, a. pulley 34 havihg disposed thereon the cable 8 which is com: mon to both wheels of the axle; said pulley is provided with a; braking device 35 constituted by a spring coiled about the some and pressed on it. I v

This braking device has for its ob'ect to interfere with the rotation of thepulloy 34 about its axis. so as to compensate the differences existing in the tension of epriu s or in the friction between the right brake mechanism.

The operation. of said arrangement is as follows: I I

When the driver desires to throw the .brulreson the front wheels, he actuates the operating lever and in consequence, the con motion 33 in the direction of the arrow F, thus moving the cable 8 which now occuthe original The said left and t e y ill? Ill)

pies the position 8,, Fig. 2, and this increases the distance between pullevs Stand 9, subjecting the cable to-a pull whereby the wing-nut 19' comes against the edges of the aperture 20, thus producing the rotation of the arm 21 in the direction of the arrow f, Fig. 5. The rod 22 and cam 24 are actuated by the rotation, of the arm 21, and

the ends 24 24 of the cam are oansedto bear respectively upon the surfaces 26, 526, of the brake members, so as to separate the latter by pivoting on the common axis 28. The outer-part of said brake members comes outer arms of the cross-piece'lO bends and thus it contributes to perform a progressive-braking of the Wheel.

Besides the device inconformity with the invention is of a very simple nature, and its principal advantage consists in its property of providinguniform braking effects for all positions occupied by the wheels and or" having no effect upon the direction of the same; these effects are moreover symmetrical for the two wheels, since a single control element'is nsed, and this is operated in the planeof symmetry of the vehicle. An' other point to be noted is that in the event of breakage of the cable, both wheels will be released at the same time. The length of the cable can be regulated without any lifting of the wheels, since it is simply necessary to turn the nut 19 in the proper direction.

Obviously, the said invention is susceptibio of modifications in detail without dcparting from the general principle, in order to adapt the same to any suitable type of vehicle frame, and in particular, the cross piece 11 carrying the, pulleys can be eliminated by employing a -table shaped axle.

claim:

1. The combination with the front axle of an automobile having a steering Wheel jOlllTiHl pirotally connected thereto carrying a braking (lllllll,"lll7illlllfl mechanism adapted to cooperate with said drnni having a rotatable operating rod, of a cross piece secured to and arranged longitudinally of the front axle having an end portion thereof overlying the pirotal'connection of the steering wheel journal, pulleys mounted on the end portion of said cross piece and the intermediate portion thereof,

and a cable passing; over said pulley and connected to said rotatable operating rod.

'2. The combination with the rent axle of an automobile having steeringrwheel journal pivotally connected thereto carrying a braking drum, braking mechanism adapted to cooperate with said drum having a ro-v tatable operating rod. of a cross-piece secured to said axle and having a free end, a pulley mounted upon said free end or the cross piece and a cable extending over said pulley and connected to said rotatable operating rod.

3; The combination with the front axle of an automobile, a steering wheel journal 'pivotally connected'tl-icreto', steering Wheel braking n'iechanism carried by said journal, of a cross-piece secured to said axle having a flexible end overlying the pivot connection between said journal and axle, and a Cable, connecting said flexible end of the crosspiece with said hraltin mechanism.

in witness whereof atlii; my signature. 

